I know it’s more common for males than females. I’m red-green color blind and as a kid I took a standard visual test that they still use today to determine whether or not you are color blind. In the test below there are six circles comprised of colored dots. Those who are not color blind will quickly see numbers in every circle. those who are Red-green color blind (me) will see only two numbers; 25 & 56.
http://www.toledo-bend.com/colorblind/Ishihara.asp
I’m not color blind (I figured as much). 
I could see the 25 in the first circle but that was it.
I’m a graphic designer.
I really like monochromatic stuff.
Here are some statistics:
Color blindness affects a significant number of people, although exact proportions vary among groups. In Australia, for example, it occurs in about 8 percent of males and only about 0.4 percent of females. Isolated communities with a restricted gene pool sometimes produce high proportions of color blindness, including the less usual types. Examples include rural [URL=“http://en.wikipedia.org/wiki/Finland”]Finland, Hungary, and some of the Scottish islands. In the United States, about 7 percent of the male population – or about 10.5 million men – and 0.4 percent of the female population either cannot distinguish red from green, or see red and green differently (Howard Hughes Medical Institute, 2006). It has been found that more than 95 percent of all variations in human color vision involve the red and green receptors in male eyes. It is very rare for males or females to be “blind” to the blue end of the spectrum.
It skips generations …
Some of us see only 25 & spots … You have the advantage if you get to see 56 also.
Usually if you are color blind, any daughter’s male children will possibly be color blind. Daughter will not be color blind. We usually receive color blindness from our mothers who pass it on from their father.
I’m good.
Why isn’t this a poll? The ban on polls has been lifted (read my sig). This thread isn’t very scientific.
Did they consider color-blindness when they designed traffic lights? It could fatally suck if you confused red and green.
That is why they have a specific order in which they change.
Like this:
what if everyone in the world was colorblind? what would life be like?
Fixed.
i dunno if this is true or not, but i hear each light has a little bit of another color in it that color blind people can distinguish. that way all the lights don’t look the same to them. the order thing is true though too.
I’m not.
And women perceive more colors than men because we have more cones in the eyes.
That’s why I can distinguish dark pink from red, something that my dad can’t.
Bite your tongue. Polls are still banned. Some people feel that it is OK for them to ignore the ban. Such ill-placed arrogance has no place here.
“Green” comes in a myriad of shades, as does red. I have always perceived the Green light as that of a very “whitish” color, and yellow is no problem, as I see it as any non-color blind person. Red looks red to me and appears dark. The difference between the red and green in a traffic signal is like night & day to me. Absolutely no similarity or confusion as to which is which. I actually have more difficulty with greens and browns. There are so many different shades of greens and browns that many don’t even look related. I would say the one that looks closest to what I see as a traffic light green would be “tea” green in this chart. To me it looks more off-white than green! But I’m probably wrong, lol. All my life people who know I’m color blind say, “what color os this, what color is that?” gets a little boring after a while lol.
That sounds like something Yogi Berra would say.
Ill-placed arrogance, by definition, has no place here. Well-placed arrogance could not have no place here. The specificity of “such” (as in “‘such’ ill-placed arrogance”) does not mitigate because any kind of ill-placed arrogance has no place here.
Ah, but your genius toys with me. You should be a software developer.
What color is your other wheel?
All that you just said is the exact same with me. In that chart, tea green looks off-white, and army green and olive look brown. So I’m a bit red/green color blind, but the interesting thing is I’m also blue/purple color blind. I once was doing a project for art where we were supposed to paint completely in shades of blue. I turned it in only to have my teacher ask me why I painted in purple. I had to re-do the project in blue.
EDIT: I just read the “tea green” wikipedia page and found out that’s the color of green tea. Now I know why my mom and I once argued about the color and the name of green tea. I kept telling her it was brown and it didn’t fit the name “green tea”.
So at age 16 (very close to 17), I just now found out that green tea is actually green.
From the Wikipedia article on metamerism –
“Making metamerism matches using reflective materials is more complex. The appearance of surface colors is defined by the product of the spectral reflectance curve of the material and the spectral emittance curve of the light source shining on it. As a result, the color of surfaces depends on the light source used to illuminate them.”
I thought I understood the word until I skimmed through the technical description in that article (the above is clear, but there’s a lot more to it). I have a color printer that uses pigment-based inks and it suffers from metamerism issues. That’s where I learned the word from.
We have one of those fuzzy, round, blanket-type things that you put around the base of a Christmas tree. It is red with dark green trim around the edge. In our living room, the dark green looks black. Not a Christmas color. I think that’s metamerism in action.
Since we’re talking about the perception of color, I thought I’d post that link. In this case, it’s not the perceiver, but the environment, that causes the perception change.
For a reflective object, it’s the visible light wavelengths that don’t get absorbed that defines the object’s color. The color, of course, is in the light. An alien might have receptors for different wavelengths. What would it see? A color-blind person sees differently, too. This is only “wrong” because color-blind people are the minority. It’s just different. Imagine if 99.999% of the population were color-blind. A few non-color-blind people would claim to see colors that “aren’t there”. They are crazy!
I’ve always wondered if what I see in my color spectrum is the same thing as what someone else sees. Like I see the sky as blue, MY blue, but maybe someone else sees the sky as what I would call MY purple. And if this is true, then I’m curious if it’s in a pattern that still works to coordinate clothing colors, so that someone who sees colors differently than me will still see things in a mixture of colors that works well together.
I’m not sure if anyone is going to follow that, but at least I can see all my numbers! The second part took me a while to discern that it was a 5, but the dots were aligned very strangely.
And another thought, some of the best printers (People who are good at printing photos etc.) and color management are people with problems with seeing color. Because these people base a lot of their work on the numbers (Values in Red, Green, and Blue to make up a color) to get an exact desired color. Because many people would judge these things more on visual appearances, when the human eye actually color adjusts and adapts to inaccuracies. (Think of when you wear a pair of colored glasses, they’re only colored for a bit, and then you adjust to them, usually very quickly) So that could be seen as an advantage I suppose.
Same here.
I saw only the 25…and I’m also a graphic designer: weird.